We recommend spraying your chains down every 10 - 15 hours of use or after any time you wash the interior out or get water in the tub. Inspect your chain guide blocks for wear and to see if they need to be adjusted. For units with vertical chains on the transmission take a towel and cover the brake disc to prevent overspray from getting on the disc and brake pads. This is also a good time to check how loose your idler chains are, you want between a 1/8" - 1/4" of play in the chains. If more, be sure to adjust them to prevent your sprockets from wearing out prematurely.